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 Post subject: DIY CNC Plasma Question
PostPosted: Thu Jul 31, 2014 5:11 pm 
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I am looking for some guidance :) I need quite a lot of plates cut on a sort of make as you go along basis. I have a decent plasma cutter and I have been looking at knocking up a CNC table for cutting my own plates. I have found various bits that are available but no one sells a complete package . below is sort of where I am heading. What else is needed to make a pc talk to this lot and actually cut to a drawing ??

Bob

http://www.ebay.co.uk/itm/161150918726? ... 1423.l2649

http://www.ebay.co.uk/itm/2Axis-3D-CNC- ... 2c865a40a7


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PostPosted: Thu Jul 31, 2014 9:05 pm 
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I been thinking about this recently too

I came across the cnc cookbook site quite a lot of info on there should all be relevant cause the motor controllers will be the same whatever cnc your building be it lathe mill or plasma table

From what I gathered you need 3 stepper motors or servo's for X and Y axis and a small amount of movement for the up and down Z axis on the torch

There seems to be loads of controllers you could use maybe even maplin cheap servo controllers

Also think about the backlash on the movement as you want it to be able to move quite fast without miss shaping your parts

Hope that helps

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PostPosted: Sat Aug 02, 2014 6:39 pm 
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Cheers for that Dave, I got my cnc cookbook arriving at the amazon locker in the local supermarket tomorrow. 8-)
It does appear to be the bible on the subject.

Bob


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PostPosted: Mon Aug 11, 2014 7:29 am 
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Well I have had a quick squint at the book and I will definitely need some help here from a leecy savy bod ( Bruce kin help me :) ) This is what I am after.

Bob

http://www.youtube.com/watch?feature=pl ... IYDCjedON0


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PostPosted: Mon Aug 11, 2014 11:36 am 
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Thats what I was thinking fortunately my brother is into all that sort of stuff so should be able to pick his brains a little

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PostPosted: Mon Aug 11, 2014 4:14 pm 
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Definitely looks like a fun project and I'm watching with interest, not sure how much help I could be though as its not really something I've ever got involved with, sounds like Dave is the man.


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PostPosted: Mon Aug 11, 2014 9:49 pm 
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Bloody hell bruce I dont know where to start with the electrics without reading a library full of books on the subject

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PostPosted: Wed Aug 13, 2014 9:20 pm 
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Well between you all we have a project on the go. I have bitten the bullet and purchased the rail system alnong with the belt drives. Apparently they are better than the track / gear system and more tolerant to dust etc.
Attachment:
$T2eC16R,!)EE9s2ugOz)BRV0HHfB,w~~60_35.JPG
$T2eC16R,!)EE9s2ugOz)BRV0HHfB,w~~60_35.JPG [ 15.31 KiB | Viewed 2248 times ]
Attachment:
$T2eC16R,!)EE9s2ugOz)BRV0HHfB,w~~60_35.JPG
$T2eC16R,!)EE9s2ugOz)BRV0HHfB,w~~60_35.JPG [ 15.31 KiB | Viewed 2248 times ]


Attachments:
$T2eC16ZHJHwE9n8ii09(BRZGELi)eg~~60_35.JPG
$T2eC16ZHJHwE9n8ii09(BRZGELi)eg~~60_35.JPG [ 10 KiB | Viewed 2248 times ]


Last edited by robo on Wed Aug 13, 2014 9:33 pm, edited 1 time in total.
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PostPosted: Wed Aug 13, 2014 9:32 pm 
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wow no wasting time with you is there will be watching with interest mainly on how well that rail system works where did you get it and how much would my wife have to sacrifice to my pocket

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PostPosted: Wed Aug 13, 2014 9:37 pm 
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Its this lot Dave.

http://www.ebay.co.uk/itm/161150918726? ... 1497.l2649

I have been picking brains and happened across a guy less than 3 miles away that has built up his own system so I might nip down there and have a look. The motor system and controls are next. It may seem a bit over the top but to be able to reproduce the profiles for both builds plus some other projects on the go is going to save me a load of time.

Bob


Last edited by robo on Wed Aug 13, 2014 9:42 pm, edited 1 time in total.

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